如何从Espresso DataInteraction获取列表大小

// 导入所需的类
import androidx.test.espresso.DataInteraction;
import androidx.test.espresso.matcher.ViewMatchers;
import static androidx.test.espresso.Espresso.onData;
import static androidx.test.espresso.matcher.ViewMatchers.withId;
import static androidx.test.espresso.matcher.ViewMatchers.withText;

// 定位到目标列表
DataInteraction dataInteraction = onData(withId(R.id.list_view_id));

// 获取列表大小
int listSize = dataInteraction.perform(new DataInteractionAction() {
    @Override
    public Matcher getConstraints() {
        return ViewMatchers.isAssignableFrom(AdapterView.class);
    }

    @Override
    public String getDescription() {
        return "getting list size";
    }

    @Override
    public void perform(UiController uiController, View view) {
        AdapterView listView = (AdapterView) view;
        listSize = listView.getCount();
    }
});

// 打印列表大小
System.out.println("列表大小：" + listSize);